Please help me understand (conceptually) how to process webhooks

im trying to send a wufoo form data via webhook, somehow capture the data on my wordpress site/database and then process the form data by http posting it to two different locations. what type of setup do i need? im not sure how to even create the URL for the webhook to be sent to, and then how to write the script the to process and send the data from my server. Also not sure how to create these custom php scripts and urls within my existing wordpress site.

Please help me map out the process of the order of steps that I need to take. Once i understand that better then I’ll start to work with with the actual code.

thanks.

Derek